baber/WOPTO huggingface dataset:
Patent GB-518866-A (GB)
Title: Improvements in lawn mowers
IPC: A01D34/42
Filed: 1938-06-18
Abstract: 518,866. Making cutter reels of lawn mowers. CLEMSON BROS.; Inc. June 18, 1938, No. 18183. Convention date, June 18, 1937. [Classes 83 (i) and 83 (ii.)] Casting composite articles.-The fly knives 10 are set in slots 18 in a mould 16 where the knives are not held rigidly at more than one point, spiders or the like are cast on to the knives, and thereafter the edges of the knives are ground to a cylindrical surface. The mould is built up of pieces as shown to facilitate assembly and disassembly. Specification 370,992 is referred to. The Specification as open to inspection under Sect. 91 describes also the welding of fly knives against shoulders on preformed spiders. This subject-matter does not appear :in the Specification as accepted.
Patent GB-957717-A (GB)
Title: Projection measuring apparatus
IPC: G01B11/00
Filed: 1960-05-23
Abstract: 957,717. Optical gauging apparatus. J. HEIDENHAIN, [trading as WENCZLER & HEIDENHAIN]. May 23 1960 [Jan. 23, 1960], No. 18184/60. Heading G1M. [Also in Division G2] An optical projector has an index mark in the projection beam path in, or close to, the image plane and displaceable across the latter by parallelogram movement of parallel spring arms supporting it. As shown in Fig. 1 the objective 2 images a scale 3, illuminated via the transparent mirror 8 by lamp 6, on a viewing screen 4. A frame 11 (see Fig. 2) supported on four parallel springs 10, carries an index mark 12 a sharp shadow of which is thrown by the projection beam on the screen. Frame 11 together, with the mark 12, is capable of back-lash free movement across the screen by rotation of knob 21 to deform the parallelogram arrangement of springs 10, the slight vertical component of this deformation being negligible. Rotation of knob 21 causes a transparent numeral-carrying disc 25 to rotate and bring into line with the axis of an auxiliary projection lens 28 that numeral corresponding to the particular adjustment of the index-mark 12 whereby the position of the latter can be read off on the screen. Instead of using an arrangement of parallel springs to support the frame, the springs may be U- or V-shaped, their deformation on movement of the frame causing a narrowing or widening of the loop, the ends of the springs attached to the frame 11 and those attached to the projector housing being substantially in a common plane parallel to the direction of displacement of the frame 11.
Patent GB-1113490-A (GB)
Title: Improvements in or relating to agricultural rotary hoes
Inventor: ROSENDAHL ARVID VIKTOR
IPC: A01B33/10
Filed: 1967-04-20
Abstract: 1,113,490. Agricultural implements. A.R.P. A. ROSENDAHLS PATENTER, AKTIEBOLAG. 20 April, 1967, No. 18192/67. Heading A1B. An agricultural rotary hoe comprises discs mounted at right angles on a driving shaft the discs having a bent portion 4 spaced at a distance from the shaft on opposite sides thereof, the bent portions being bent out of the plane of the disc and having an edge contour having a leading part in the form of part of a circle and a trailing part in the form of a cut-out 5 of this circle.
Patent GB-407850-A (GB)
Title: Improvements in safety devices for steam generators, internalcombustion engine cooling and like circulation systems for heat exchange
IPC: F22B37/42
Filed: 1933-06-26
Abstract: 407,850. Liquid-fuel furnaces. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 26, 1933, No. 18199. Convention date, June 24, 1932. [Class 51 (i).] The opposite sides of a pump 2 circulating water over the heated surfaces of a steam generator 1 are connected to a differential pressure gauge 8 which completes contacts to cut off the fuel supply when the proper difference of pressure between the two sides of the pump is disturbed by an obstruction or the accumulation of steam bubbles in the supply and delivery pipes of the pump. When the pump is not driven at constant speed, for instance when it is coupled to the compressor delivering combustion air to the generator, the diaphragm 10 of the pressure gauge is connected to a centrifugal governor on the pump shaft to vary the pressure on the diaphragm in accordance with the speed of revolution of the shaft. In place of a centrifugal governor, the gauge diaphragm may be connected to a piston or diaphragm acted upon by oil or air pressure varying in accordance with the speed of the pump.
Patent GB-224208-A (GB)
Title: Improvements in or relating to mine discharging devices
IPC: B63G8/33
Filed: 1924-07-30
Abstract: 224,208. Electric Boat Co., (Assignees of Grieshaber, H. E.). Oct. 29, 1923, [Convention date]. Laying mines.-Explosive mines are discharged from a submarine vessel by means of a magazine 7 adapted to be loaded with a plurality of mines and to transfer these to a discharge tube 3. The mines may be fed into the magazine by conveyers 20, and may be ejected through the tube 3 by a pneumatic ram 14. Water tanks 10, 24 are provided for use in compensating for the weight of the discharged mine. The magazine may be rotated horizontally or vertically, and the chambers 8 therein for the mines may be parallel with or at right-angles to the axis of rotation. The tube may be fitted with doors at both ends and arranged in an inclined position; and the mine may drop out by gravity, or be ejected by a pneumatic ram situated in the rear door of the discharge tube, instead of behind the magazine like the ram. 14.
Patent GB-715389-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J23/075
Filed: 1951-08-02
Abstract: 715,389. Magnetron amplifiers. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 2, 1951 [Aug. 12, 1950], No. 18366/51. Class 39(1) In travelling wave amplifiers in which an electron beam gives up energy to a wave travelling along a delay line in a region of crossed electric and magnetic fields, the emission from the cathode of the gun is space charge limited and the profile and potential of the focusing and accelerating electrodes are such that the potential at the beam edges and the potential gradient at the beam edges normal to the edges is the same as it would be in a beam of infinite cross-section. The potentials of the focusing and accelerating electrodes lie within the range cathode potential to the potential of the most positive electrode in the crossed field region, and increase with increased distance of the electrodes from the cathode. The shape of the electrodes which are of non-magnetic material may be found by calculation or by electrolytic tank experiments. In one form, Fig. 2, the gun has cathode 21, Wehnelt electrode 22 making an angle of 67.5 degrees with the beam and profiled focusing and accelerating electrodes 23, 24, 27, 28. In Fig. 3 (not shown), electrode 27 is a filter type circuit having a plurality of cavity resonators and with end slots for input and output couplings, and electrode 31 is supported by a flat insulator from the tube wall. In a modification, Fig. 5, the crossed field travelling wave tube is bent into circular form, and has cathode 3, Wehnelt control electrode 10, I profiled accelerating and focusing electrodes 18, 19, 20, and delay line 9. The electron flow is controlled by varying the potential of the cathode or of an 'auxiliary electrode'. It is stated that the space charge limited beams have reduced shot noise as compared for example with known tubes with saturated or unsaturated emission.
Patent GB-380177-A (GB)
Title: Improved manufacture of lead for pencils
IPC: B43K19/18
Filed: 1931-06-27
Abstract: 380,177. Pencils. HAMMEL, M., 16, Seelstrasse, Oberpfalz, Neumarkt, Bavaria, Germany. June 27, 1931, No. 18632. [Class 146 (iii).] Pencil leads are manufactured by mixing together graphite, reduced to the required fineness by an oxidation treatment of crystalline graphite, e.g. by treating with a mixture of concentrated sulphuric acid and potassium permanganate, and clay or other usual addition, pressing the mixture into strands, and burning.
Patent GB-680261-A (GB)
Title: A new or improved machine for use in the production of cast iron articles
Inventor: RICHARDS JAMES AUBREY
IPC: B22D18/02
Filed: 1950-07-26
Abstract: 680,261. Casting-machines. MACFARLANE & CO., Ltd., W. June 26, 1951 [July 26, 1950], No. 18650/50. Class 83 (i). A machine for making cast-iron articles comprising a lower die into which molten metal is poured and an upper die which is then lowered to displace the metal to the shape defined by the dies, is provided with means to bring the upper die quickly into a position where it is about to contact the molten metal and with cam or like means to retard its final closing movement and thus eliminate splashing of the molten metal. The lower die 10 is rigidly supported by a stool 11 on the machine bed 12. The upper die 13 is supported by a pair of arms 14 free to rotate on a shaft 15 and is raised and lowered by arms 23 keyed to shafts 21 at each end of the machine in axial alignment with the shaft 15 and driven through gearing from motors 17. Towards the end of the closing movement of the die, rollers 28 at the ends thereof contact cams 27 on a shaft 24 driven through gearing 25 from a motor 26. The shaft 24 drives a limit switch 30 which operates to cut out the motor 26 when the shaft has made a complete revolution. One of the motors 17 drives a limit switch 29 which operates to halt rotors 17 momentarily, just prior to the rollers 28 contacting the cams 27. In operation, molten metal is poured into the die 10 and a push-button operated to start motors 17, 26. Die 13 moves down quickly until the momentary halt, after which it moves slowly as permitted by the cams 27 but exerts its full pressure in its closed position, after which it is raised to its initial position.
Patent GB-594777-A (GB)
Title: Improvements in or relating to non-slip surfaces for application to floors, decks, stairs or the like
IPC: E04F11/16
Filed: 1944-09-29
Abstract: 594,777. Floor &c. treads. CHEETHAM, T., CHEETHAM, L., and CHEETHAM, R. Sept. 29, 1944, No. 18725. [Class 20(iv)] Non-slip floor, &c., treads comprise short sections 10 of material in slideways formed by outwardly extending horizontal flanges 13 of adjacent metal bars 12 secured to the floor. Or the flanges may be struck out from a base plate covering the floor, &c. For a stairway a nosing 19 for the edge is provided by the end bar 12a. The treads may be secured to a wood or soft rubber base which is engaged in the slideway. Instead of inverted T-form the treads may be shaped with a recess 24 to provide a cushioning effect, and each bar forms a slideway with inwardly bent flanges 22. Near each end of the tread the end section is screwed in position or held by a stop. The slideways may be arranged in curves or irregular formation.
Patent GB-712801-A (GB)
Title: Improvements in the production of solid paraffin hydrocarbons by the hydrogenation of carbon monoxide
IPC: C08G61/04
Filed: 1952-07-24
Abstract: Solid paraffin hydrocarbons are prepared by hydrogenation of carbon monoxide in the presence of a catalyst containing iron and copper in precipitated form, alkali metal, and such an amount of a calcined substance containing silica that the molar ratio of p  alkali metal oxide to silicon dioxide lies between 0.05 and 0.25 (see Group III). Before use the catalyst is partially reduced with hydrogen or synthesis gas at 170-180 DEG  C., practically no metallic iron being formed.  Synthesis takes place at 210-230 DEG  C. and at 5-30 atmospheres pressure; synthesis gas in which the ratio by volume of hydrogen to carbon monoxide is greater than 2 : 1 may be employed, for example waste gas from the synthesis of methyl or isobutyl alcohol from carbon monoxide and hydrogen.ALSO:Catalyst for use in the hydrogenation of carbon monoxide to form solid paraffin hydrocarbons (see Group IV (b)) contains iron and copper in precipitated form, alkali metal, and such an amount of a calcined substance containing silica that the molar ratio of alkali metal oxide to silicon dioxide lies between 0.05 and 0.25, preferably between 0.08 and 0.2; when the alkali metal is predominantly potassium, the preferred ratio is between 0.1 and 0.16.  The amount of silica may be 15-100 (preferably 25-60) parts by weight per 100 parts of iron.  The silica-containing substance may be calcined silica gel or kieselguhr.  In an example a hot concentrated solution of iron and copper nitrates and a concentrated soda solution are passed through flow meters into a vessel containing finely ground calcined silica gel suspended in water; precipitation takes place at pH 8.2 and the product is heated to 90 DEG  C., filtered off and washed free from alkali metal; the required amount of potassium carbonate is added and the catalyst shaped and dried.  Before use the catalyst is partially reduced with hydrogen or synthesis gas at 170 DEG -180 DEG  C., practically no metallic iron being formed.
Patent GB-1082751-A (GB)
Title: Improvements relating to gears
Inventor: HICKS RAYMOND JOHN
IPC: F16H1/46
Filed: 1964-05-06
Abstract: 1,082,751. Toothed gearing. COMPACT ORBITAL GEARS Ltd. May 6, 1965 [May 6, 1964], No. 18733/64. Heading F2Q. In gearing for driving a winch drum, comprising planet or intermediate pinions 12 meshing with a central or sun gear 11 on an input shaft 10 and with an internally-toothed output ring gear 20, spaced apart rings 18, one on either side of the ring gear 20 encircle the pinions 12 and support them. In the epicyclic gear shown, the rings 18 are internally toothed, with a different number of teeth from the ring gear 20, and mesh with the pinions 12 to provide fixed reaction members for the gearing. Caging rings 20, 21 coaxial with the shaft 10 engage in annular slots in the ends of the pinions 12 to locate the latter.
Patent GB-1351992-A (GB)
Title: Method of stabilising an aboveground structure supported on or by a plurality of friction piles and the stabilisable structures per se
IPC: E02D5/54
Filed: 1971-06-03
Abstract: 1351992 Piles; well points SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 3 June 1971 [5 June 1970] 18859/71 Headings E1F and E1H An above-ground structure is supported on a plurality of friction piles 20 which extend into a water-saturated, unconsolidated soil, each pile 20 being provided with perforations 22, 23 or a permeable portion which drains water from the surrounding soil to consolidate it, thus maintaining the water content of the soil at or below the level at which the structure is supported stably therein by said piles. A pump 25 discharges the water up a tube 24.
Patent GB-130023-A (GB)
Title: Synthesis of Ammonia.
Inventor: MAXTED EDWARD BRADFORD
IPC: C01C1/04
Filed: 1917-12-21
Abstract: 130,023. Maxted, E. B. Dec. 21, 1917. Ammonia is produced by subjecting a gas mixture consisting of, or containing in substantial proportions, nitrogen and hydrogen, at an elevated pressure, to the action of an electric arc, preferably of high tension, the gas mixture produced being rapidly cooled, for instance by direct or indirect contact with water or a cooler gas current. The temperature to which the gas is heated by contact with the arc is preferably 2000‹ C. or higher, and a suitable pressure is from 50 to 100 atmospheres. In the apparatus described, a nitrogen-hydrogen mixture, compressed by a compressor B and circulated by a pump. D, is subjected in a reaction chamber A to the action of an arc formed between electrodes C<1>, C<2>; the gas mixture produced passes through a non-conducting water-cooled tube E and a cooling-coil F to a chamber G in which the ammonia is eliminated by refrigeration or absorption, the unconverted gas being recirculated by the pump D. Fresh gas, to compensate for that transformed into ammonia, is passed into the apparatus through the compressor B. The cooling-coil F may be omitted, the gas mixture being led directly into' water in the absorber.
Patent GB-147357-A (GB)
Title: Improvements in washing or the like machines
IPC: D06F1/00
Filed: 1919-07-31
Abstract: 147,357. Coleman, C. J. July 31, 1919. Straight tubes between headers. - A tubular heating - grid for the tanks of washing-machines is made by forming two headers and a set of connecting-tubes in halves 1, 2 each from a sheet of metal suitably stamped and slotted and united by welding at their contiguous edges.
Patent GB-568490-A (GB)
Title: Improvements relating to manhole and inspection covers and frames
IPC: E02D29/12
Filed: 1943-11-15
Abstract: 568,490. Hinges; bolts. ELKINGTON, V. Nov. 15, 1943, No. 19005. [Classes 65 (ii) and 89 (i)] A removable hinge for a manhole cover, or the like, having a cover 1 and frame 3 with their upper surfaces in one plane, is only positioned when the cover is to be raised. Bolts 9, 10, have non-circular heads 13 which are inserted in slots in the members 1, 3, and the bolts rotated so that the heads lie across the slots, and nuts 11 screwed down. The bolts have nut-retaining heads 12. Ribs 14, 15, provide stops when the cover is opened, a pin passing through holes 16, then in alignment, for locking purposes. A number of holes 16 may be provided. Specifications 447,063, 472,760 and 522,548, [all in Group X], are referred to.
Patent GB-1456842-A (GB)
Title: Wall structures for buildings
IPC: E04F13/08
Filed: 1973-04-19
Abstract: 1456842 Cladding UNITY INTERNATIO NAL DEVELOPMENT CO Ltd 19 July 1974 [19 April 1973] 19053/73 Heading E1B A substructure 1 is clad with horizontal rows of panels 2 each having a rabbetted upper edge with the lower edge of each panel overlapping the rabbet of the next lower panel; a waterproof sheet 9 is arranged behind each panel and extends between the overlapping surfaces of adjacent panels; and a layer 10 of resilient material (e.g. polystyrene panels) is interposed between the substructure and the sheet 9. A layer of breather paper 11 is applied to the substructure. Aluminium 12 and plastics 15 extrusions support the lowermost row of panels. The lower edges of the panels are seated on mastic 7, 18.
Patent GB-720229-A (GB)
Title: Hydraulic or pneumatic stowing tubes
IPC: C21D9/14
Filed: 1952-07-29
Abstract: 720,229. Metal tubes. DEUTSCHE EDELSTAHLWERKE AKT.-GES., BRIEDEN, K., and KUHME, E., [trading as MASCHINENFABRIK, K. BRIEDEN & CO.]. July 29, 1952. [July 30, 1951] No. 19132/52. Class 99 (2). [Also in Group II] A tube through which material is hydraulically or pneumatically forced and which may be of unalloyed or lightly alloyed steel with a carbon content of 0.25 to 0.6 per cent., has ring-like hardened zones 2, or at least one helical hardened zone extending from the inside surface 1 of the wall of the tube through only a part of the wall thickness. The ring-like zones may be perpendicular or inclined to the axis of the tube, and may merge into the unhardened portions 3 of the tube wall. The width of the unhardened zones 3, Fig. 1, and Fig. 2 (not shown), or the hardened zones 2, Fig. 3 (not shown) may increase from the inside to the outside surface 4 of the tube wall. A heating device, e.g. induction heating apparatus, followed by a quenching device may be passed through the tube, or the tube may be passed over the heating and quenching devices, the feeding speed and heating output being so controlled to produce the hardened zones, and the outside of the tube being cooled by liquids or gases or by applying solid or plastic substances, e.g. a tube of silicone traversed by a cooling liquid can be applied to the outside of tube; alternatively, the wall of the tube is hardened throughout its thickness at the zones 2 which a.re afterwards independently tempered or annealed from the outside of the tube so that the zones do not extend to the outer surface 4 of the tube, or the tube may be tempered or annealed throughout its length, e.g. in a furnace, after the production of individual hardened zones extending through the thickness of the tube wall. The tube may be cooled on the inside during the tempering or annealing treatment.
Patent GB-225513-A (GB)
Title: Improvements in and relating to processes for the distillation of bituminous substances at low temperatures
IPC: C10B7/10
Filed: 1924-08-12
Abstract: 225,513. Kohlenscheidungs-Ges. Nov. 28, 1923, [Convention date]. Coking processes; retorts.-In distilling bituminous material at low temperatures, the charge is suddenly subjected to a temperature above the normal one of 500‹ C. so that it is quickly raised to this temperature and then immediately on reaching it is moved into a zone of normal temperature. The material is charged into a retort a through an inlet b and is highly heated in a zone d having a temperature of 700‹ C. and disposed directly over the fire place e. A screw conveyer g having threads of steep pitch in the hot zone moves the material quickly through the zone d and more slowly through the zone f where it is heated to the normal distilling temperature. The gases &c. escape through a pipe h from the hot zone in which heavy constituents are cracked into light oils.
Patent GB-248630-A (GB)
Title: Improvements in or relating to the reinforcement of concrete, cement and the like
IPC: E04C5/04
Filed: 1925-07-29
Abstract: 248,630. Raworth, E. L., Hamilton, C. W., McCall, T. H., and Heard, P. July 29, 1925. Reinforced concrete.-A metal fabric reinforcement for concrete consists of main straight bars 5, 6 secured to a framework composed of intersecting bars 1, 2 formed with bends 3, 4. The bars 1, 2 are clinched together in the bends 3, and the bars 5, 6 are clinched in the bends 4. The angle at which the bars cross may be varied.
Patent GB-864317-A (GB)
Title: Improvements in and relating to cap closing devices for cartons and the like
Inventor: WELLS ERIC
IPC: B65B7/28
Filed: 1958-06-17
Abstract: 864,317. Closuring containers. BADEX Ltd. June 16, 1959 [June 17, 1958], No. 19292/58. Class 125(2). Apparatus for applying thin sheet metal caps to cartons comprises a cylindrical casing A having a shoulder a<SP>1</SP> to receive a flange b of a resilient disc B which has a central aperture bl and an annular recess b2 and is clamped in place by a cover C. According to the Provisional Specification the shoulder a<SP>1</SP> may be formed by a washer sliding in the base a<SP>2</SP> of the casing.
Patent GB-236752-A (GB)
Title: Improved gear for transferring cargo between ships and lighters and for like purposes
IPC: B66C23/60
Filed: 1924-08-15
Abstract: 236,752. Norfolk, C., and Norfolk, E. Aug. 15, 1924. Addition to 217,355. Guiding load; rope grips.-Relates to the device for gripping the hoisting rope a during lowering in order that the pivoted arm k may swing the load inwards. The rope grip comprises pulleys b<1>, b<2>, mounted directly on the arm k and a pulley b<3> on a lever c pivoted on the arm k at c<3>. The rope a runs freely between the pulleys b<1>, b<2> and the pulley b<3> during hoisting. To grip the rope, the lever c is actuated by a rod or hand-line to move the pulley b<3> towards the pulleys b<1>, b<2>, and as the arm k swings downwards a pulley d on the lever c bears on the rope and increases the grip. The lever c is provided with a number of pivot bearings for the fulcrum pin c<3> and for the spindle of the pulley d, so that the grip may be adjusted for gently lowering the load after swinging inwards.
Patent GB-571896-A (GB)
Title: Improvements in or relating to electric induction motors
IPC: H02K11/00
Filed: 1943-11-19
Abstract: 571,896. Induction motors. SCOPHONY, Ltd., WIKKENHAUSER, G., JONES, P. L. F., and FRANKLIN, D. P. Nov. 19, 1943, No. 19405. Drawings to Specification. [Class 35] In an induction motor of the kind claimed in Specification 536,513, an earthed screen is provided, preferably disposed about the stator end winding and the stator core may also be earthed. The Provisional Specification relates to induction motors in general.